Fan cover of computer

ABSTRACT

A fan cover includes a base plate, a frame, and a number of ribs. The frame is made of a number of ring-shaped portions with different diameters and concentrically arranged. A number of strip-shaped portions are radially formed among the ring-shaped portions to connect the ring-shaped portions together. The ribs connect the frame to the base plate at an angle. A number of ventilation holes are defined in the frame.

BACKGROUND

1. Technical Field

The disclosure relates to a fan cover used in computer.

2. Description of Related Art

Many electronic components in a computer generate heat when operating. In designing the computer, fans are incorporated to dissipate heat generated by the electronic components to prevent the electronic components from overheating.

Fans are usually positioned on a brim of a chassis of the computer for directing air flow into the chassis. High speed rotating fan blades are dangerous for operators. Thus, a fan cover is usually used to prevent operator injury. However, conventionally fan covers define a number of tight and small holes. This structure can satisfy safety requirement for operators, but cannot get good heat dissipating effects (e.g. low airflow).

Therefore, there is room for improvement within the art.

BRIEF DESCRIPTION OF THE DRAWINGS

Many aspects of the embodiments can be better understood with reference to the following drawings. The components in the drawings are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the exemplary fan cover of a computer. Moreover, in the drawings, like reference numerals designate corresponding parts throughout the several views. Wherever possible, the same reference numbers are used throughout the drawings to refer to the same or like elements of an embodiment.

FIG. 1 is a schematic view of an embodiment of a fan cover.

FIG. 2 is a schematic view of a computer with the fan cover in FIG. 1.

FIG. 3 is a front view of the computer in FIG. 2.

FIG. 4 is a side view of the partially computer in FIG. 2.

FIG. 4 is a schematic view of the computer with the fan cover being tested with a tool.

DETAILED DESCRIPTION

Referring to FIG. 1, a fan cover 100 includes a base plate 10, a number of ribs 20, and a frame 30. The ribs 20 connect the frame 30 to the base plate 10 at an angle to allow the frame 30 to be positioned in another surface, parallel to the surface of the base plate 10. The frame 30 is made of a number of ring-shaped portions 12, 14, 16 with different diameters and concentrically arranged. A number of strip-shaped portions 18 are radially formed among the ring-shaped portions 12, 14, 16 to connect the ring-shaped portions 12, 14, 16 together. A central hole 22 and a number of ventilation holes 24 are defined in the frame 30. In the exemplary embodiment, the fan cover 100 is formed by a punch stretch process.

Referring to FIGS. 2 to 4, the fan cover 100 in FIG. 1 is mounted to a computer 500. The computer 500 includes a back plate 200 defining an opening 210, and a fan 310. The fan 310 includes an axle 312 and a number of fan blades 314. The position of the opening 210 corresponds to the fan 310 in the computer 500. In the exemplary embodiment, the base plate 10 of the fan cover 100 is mounted on an inside of the back plate 200 with fasteners, such as screws. The frame 30 extends through the opening 210. The central hole 22 corresponds to the axle 312 of the fan 310, and the ventilation holes 24 correspond to fan blades 314 of the fan 310.

Referring to FIG. 5, a tool 800 that simulates a finger is used for testing the fan cover 100 when the fan 310 is operating. A tip end 810 of the tool 800 is inserted into the central hole 22 and the ventilation holes 24 for testing. When the tip end 810 is inserted into the central hole 22, the tip end 810 is not damaged because the central hole 22 corresponds to the position of the axle 312. When the tip end 810 is inserted into the ventilation holes 24, the length of the tip end 810 entering into the ventilation holes 24 becomes longer.

The fan cover 100 in this disclosure has many advantages. The frame 30 protrudes out from the back plate 200 of the computer 500. Thus, a distance between the fan cover 100 and the fan 310 is increased. With this design, the fan cover 100 is safer than a conventional fan cover 100. Additionally, the ring-shaped portions on the frame 30 allow the ventilation holes 24 to become larger for conveniently dissipating heat.

Understandably, the fan cover 100 may be integrally formed with the back plate 200, and thus, the base plate of the fan cover may be omitted.

It is to be understood, however, that even through numerous characteristics and advantages of the disclosure have been set forth in the foregoing description, together with details of the system and function of the disclosure, the disclosure is illustrative only, and changes may be made in detail, especially in the matters of shape, size, and arrangement of parts within the principles of the disclosure to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed. 

What is claimed is:
 1. A fan cover comprising: a base plate; a frame made of a plurality of ring-shaped portions, the ring-shaped portions have different diameters and are concentrically arranged, a plurality of strip-shaped portions radially formed among the ring-shaped portions connect the ring-shaped portions together; and a plurality of ribs connecting the frame to the base plate at an angle; wherein a plurality of ventilation holes are defined in the frame.
 2. The fan cover as claimed in claim 1, wherein a central hole is defined in the frame.
 3. The fan cover as claimed in claim 1, wherein the frame is positioned in another surface parallel to one surface of the base plate.
 4. The fan cover as claimed in claim 1, wherein the fan cover is formed by a punch stretch process
 5. An electronic device, comprising: a back plate; a fan including an axle and a plurality of fan blades; a fan cover formed on the back plate corresponding to the fan; the fan cover comprising: a frame defining a central hole and a plurality of ventilation holes; and a plurality of ribs connecting the frame to the back plate at an angle; wherein the central hole corresponds to the axle of the fan, and the ventilation holes correspond to fan blades of the fan.
 6. The electronic device as claimed in claim 5, wherein the frame is made of a plurality of ring-shaped portions , each ring-shaped portion have a different diameter and the ring-shaped portions are concentrically arranged.
 7. The electronic device as claimed in claim 6, wherein a plurality of strip-shaped radial portions are formed among the ring-shaped portions to connect the ring-shaped portions together.
 8. The electronic device as claimed in claim 5, wherein the fan cover includes a base plate, the base plate is mounted on an inside of the back plate with fasteners. 